Method of polishing spinning-rings.



PATENTED NOV. 21, 1905.

F. H. THOMPSON. METHOD OF POLISHING SPINNING RINGS.

APPLICATION FILED MAYI, 1905.

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UNITED STATES PATENT OFFICE.

FRANK H. THOMPSON, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

METHOD OF POLISHING SPINNING-RINGS.

Specification of Letters Patent.

Patented Nov. 21, 1905.

Application filed May 1, 1905. SerialNo. 258,188.

To all whom, it may concern:

Be it known that I, FRANK H. THOMPSON, a

" citizen of the United States, and a resident of Hopedale, county of Worcester, State of Mas-" sachusetts, have invented an Improvement in Methods of Polishing Spinning Rings, of which the following description, in connection with the accompanying drawings, is a specification, like figures n the drawings representing like parts.

The flanged rings which form the travelerraceways on ring-spinning frames require a very smooth and highly-polished inner surface in order to reduce as much as possible the friction between the inner ends of the traveler and the ring and afford a true bearing-surface for the traveler. Various modes of polishing the inner surfaces of the rings have been devised, but they are slow and require considerable skill in order to smooth and polish the desired surface, particularly in the case of double-flanged rings of a type in extended use.

This invention has for its object the production of a novel, simple, and highly-efficient method for quickly and uniformly imparting a high polish and uniformly-smooth surface to the interiors of a large number of rings at one time, the action of centrifugal force being made effective in the hereinafterdescribed method in applying the polishing material to the ring-surface to be treated.

The various novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the following claims. 4

Figure 1 is a front elevation of one convenient form of apparatus for carrying out the method embodying my present invention, one of the bearings for the rotatable carrier being broken out. Fig. 2 is a cross-section of the apparatus on the line 2 2, Fig. 1, looking toward the right. Fig. 3 is an enlarged radial sectional detail taken on the line 3 3, Fig. 2, the pinion and connected portions being shown in elevation. Fig. 4 is a side elevation of a portion of the outer face of one of the heads of the carrier, to be described; and Fig. 5 is an enlarged detail, centrally broken out, of one of the ring-holders, the stack or group of rings held therein being shown in section, with the polishing material in the closed end'ring-tube.

Referring to Fig. 1, a base or bed plate 1 is provided with upright standards 2 3, the former having a bearing 4 for one end of a horizontal shaft 5, extended loosely through an elongated sleeve 6, rotatably mounted in a bearing 7 on the standard 3. A belt-pulley 8 is secured to the outer end of the sleeve, and a similar pulley 9 is secured to the opposite end of the shaft 5 beyond the bearing 4, a collar 10 being fixed on the shaft at the outer end of the sleeve 6, as shown at the right, Fig. 1. A carrier is rotatably mounted on the shaft, the carrier comprising two like heads 11, preferably made as castings, rigidly connected and maintained a predetermined distance apart by longitudinal bars 12, reduced at their ends to pass through holes in the heads and threaded to receive nuts 13, clamping the heads and bars together. Three of the bars are shown in cross-section, Fig. 2, arranged symmetrically around the shaft 5. The head adjacent the sleeve 6 is secured to or forms a part of the'latter, and bosses 14 on the outer faces of the heads cooperate with the inner ends of the bearings 4E and 7 to prevent any longitudinal movement of the carrier, which is rotated by means of a belt (not shown) passed around the pulley 8 from a suitable source of power.' I have provided each head with a series of circularly-arranged bearings for the journals of ring-holders, to be described, each bearing comprising a seat 15 and a cap 16, pivoted on the head at 17 (see Fig. 4) and held closed by a stud-bolt 18, the bearing having a suitable bushing 19. Referring to Fig. 2, the bearings are arranged at equal distances apart, two bearings between each two bars 12 of the carrier.

Inasmuch as the ring holders or cages are of like construction, only one will be described in detail, it comprising two thick strong disklike end members 20 and 21, the former having an outwardly-extended journal 22, shouldered at 23, while the member 21 has adjacent its outer face a pinion 24: and a projecting journal 25 in alinement with the journal 22. (See Figs. 1 and 5.) Herein three equidistant elongated side rods 26 are fixedly secured to the periphery of the disk 20 and midway between their ends are embraced by and secured to a ring 27, (see Fig. 1,) the opposite ends of the side rods having elongated slots 28 to receive the shanks of clamping bolts 29,

which enter threaded holes in the periphery of the disk 21. WVhen the bolts are set up, a cage is formed comprising the solid end disks and the side rods, the journals 22 and 25 entering opposite bearings in the heads of the carrier, the pinions 24: lying inside the righthand carrier-head, viewing Fig. 1. A slight annular enlargement is made on the inner face of each disk for a purpose to be described.

The shaft 5, which is rotatable from the pulley 9 independently of the carrier, has secured to it near the inner face of the righthand head (see Fig. 1) a large gear 31, adapted to mesh with the pinions 24: of the several ring holders or cages, so that the latter may be given axial rotation while they are rotated bodily around the axis of the carrier.

The apparatus herein shown is designed more especially for polishing the inner suras shown in Fig. 5, comprise an annular web 32 and like flanges 33 at the top and bottom of the web.

In arranging the apparatus the end member 21 is removed from the ring-holder by withdrawing the bolts 29, and a group of the rings are stacked up in the holder, the rings being slipped in between the side rods 26, the inner faces thereof being so disposed as to lie across the outer edges of the ring-flanges, the endmost ring of the group fitting around the enlargement 30 of the disk 20. The side rods maintain the group of rings in axial alinement, the top flange of one ring resting upon the bottom flange of the next, as shown in Fig. 5, making a tube of rings. The disk 21 is applied after polishing material (indicated at 34:) is introduced into the ring tube, and when the disk is in position to force the rings tightly together the bolts 29 are set up, clamping the group of rings firmly in place in the holder. The latter is then positioned on the carrier and the caps 16 are secured in place by the stud-bolts 18, the pinion 24E meshing with the large gear 31. Similarly the other ringholders are filled and placed in position on the carrier. The polishing material which I have found very effective is composed of a mixture of iron-filings and emery; but any suitable polishing material may be used. The apparatus is now started, the carrier being rotated at such a rate of speed that the centrifugal force will throw the polishing material outward against the outermost wall of each tube of rings. At the same time axial rotation of the ring holders or cages is effected by rotating the shaft 5 and its attached gear 31 oppositely to the direction of rotation of the carrier or in the same direction at a higher speed. In either case the ring tubes will be rotated axially, and thereby the polishing material will be caused to act uniformly and evenly upon the entire inner surfaces of the rings forming the tubes. The higher the faces of double-flanged spinning-rings, which,

speed of rotation of the carrier the greater will be the force with which the polishing material will act upon the exposed surfaces of the rings and the more rapid the axial rotation of the rings the quicker the polishing will be effected. It will he manifest that mere axial rotation would cause the polishing action to' depend only on the weight of the polishing material and bodily rotation of the tubes of rings about the horizontal axis of the carrier would only force the material against the inner surfaces of the rings at one place; but by the combined action of the two rotations simultaneously eflected a very smooth and highly-polished surface is rapidly and easily effected with great uniformity, the polishing material acting on the irregular inner surface of each ring with perfect ease.

The apparatus herein shown, by which the method forming the subject-matter of this invention may be carried out, is not herein claimed, as the same forms the subject-matter of another application for United States Patent, Serial No. 246,199, filed by me February 18, 1905.

Having fully described my invention, What I claim as new, and desire to secure by Letters Patent, is a 1. The herein-described method of polishing spinning-rings, which consists in directing by centrifugal force polishing material against the inner surface of a plurality of rings in axial alinement, and simultaneously effecting axial rotation of the rings to equalize and distribute the action of the polishing material over their exposed surfaces.

2. The herein-described method of polishing double-flanged spinning-rings,which consists in forming a tube of a plurality of rings flange to flange in axial alinement; introducing polishing material to the tube and closing the ends thereof; directing said material by centrifugal action against the inner surface of the ring, and simultaneously presenting successive portions of the said surfaces to the action of the polishing material.

3. The herein-described method of polishing spinning-rings, which consists in rotating bodily about an external horizontal axis a tube closed at its ends and formed of aplurality of the rings clamped together and c0ntainingpolishing material, to force the latter outward by centrifugal action, and simultaneously effecting axial rotation of the tube to equalize the action of the polishing material upon the inner surfaces of the rings.

4:. The herein-described method of polishing the inner surface of a tubular body,which consists in directing by centrifugal force polishing-material against the inner surface of the tubular body, and simultaneously effecting axial rotation thereof to equalize and distribute the action of the polishing material over the exposed surface.

5. The herein-described method of polish- I In testimony WhereofI have signed my name ing the inner surface of a tubular body,which to this specification in the presence of two subconsists in directing by centrifugal force polscribing Witnesses. ishing material against the inner surface of FRANK H. THOMPSON.

Witnesses:

GEORGE OTIS DRAPER,

ERNEST W. W001).

the tubular body, and simultaneously imparting relative movement between the tubular body and polishing material. 

